A charging device for charging an energy accumulator unit, in particular a battery pack, of a hand-held power tool. The charging device includes a cooling device for cooling the energy accumulator unit, in particular the battery pack, a charger housing, which at least in sections forms an outer housing, and a receptacle unit which may detachably accommodate the energy accumulator unit, and is provided to accommodate the energy accumulator unit in a connected state and/or hold it at the charging device. The cooling device is provided to form an airflow directed onto the energy accumulator unit in such a way that the airflow at least in sections flows around the energy accumulator unit.
Legal claims defining the scope of protection, as filed with the USPTO.
2. The charging device as recited in claim 1, wherein the energy accumulator unit includes a battery pack.
3. The charging device as recited in claim 1, wherein the cooling device includes the fan element to produce the airflow directed onto the energy accumulator, the airflow being guided past the energy accumulator unit.
4. The charging device as recited in claim 1, wherein the airflow is directed onto the energy accumulator unit.
5. The charging device as recited in claim 1, wherein the charging device includes the air outlet opening to orient the flow direction of the airflow, the flow direction forming a flow angle of at least 5°, in relation to a surface normal of the outer housing.
7. The charging device as recited in claim 1, wherein the airflow is guided to flow out of the charging device to cool the energy accumulator unit.
8. The charging device as recited in claim 5, wherein the charging device includes the guide recess to guide the airflow from the fan element to the air outlet opening.
9. The charging device as recited in claim 1, wherein the charging device is configured to charge the energy accumulator unit in a connected state and to cool the energy accumulator unit using the cooling device.
10. The charging device as recited in claim 1, wherein the energy accumulator unit includes multiple rechargeable battery cells which are connected using a cell connector.
11. The charging device as recited in claim 10, wherein the cell connector is situated in or at a side wall of the outer housing, the energy accumulator unit being situated in a charging state on the charging device so that the airflow flows against the side wall of the charging device.
12. The charging device as recited in claim 5, wherein the air outlet opening is configured to orient the flow angle of the flow direction of the airflow as a function of the energy accumulator unit.
14. The system as recited in claim 13, wherein the energy accumulator unit includes a battery pack.
16. The charging device as recited in claim 15, wherein the cooling device includes two fan elements, which function as cooling elements, each of which is provided to form an airflow directed onto two opposite sides of the battery pack housing.
17. The charging device as recited in claim 16, wherein the charger housing includes at least one air outlet opening that is spaced apart from the receptacle unit.
18. The charging device as recited in claim 15, wherein the charger housing includes at least one air outlet opening that is spaced apart from the receptacle unit.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
March 25, 2019
November 8, 2022
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